#pragma once
#include <vector>
#include <iostream>
#include <fstream>
#include<boost/algorithm/string.hpp>
#include"cppjieba/Jieba.hpp"

namespace ns_util
{
    class FileUtil
    {
    public:
        static bool ReadFile(const std::string &file_path, std::string *out)
        {
            std::ifstream in(file_path, std::ios::in);
            if (!in.is_open())
            {
                std::cerr << "open file" << file_path << "error" << std::endl;
                return false;
            }

            std::string line;
            while (std::getline(in, line))
            {
                *out += line;
            }
            in.close();
            return true;
        }
    };

    class StringUtil
    {
        public:
            static void CutString(const std::string& target, std::vector<std::string>* out, const std::string& sep)
            {
                //boost split
                boost::split(*out, target, boost::is_any_of(sep), boost::token_compress_on);
            }
    };

    const char* const DICT_PATH = "./dict/jieba.dict.utf8";
    const char* const HMM_PATH = "./dict/hmm_model.ulstf8";
    const char* const USER_DICT_PATH = "./dict/user.dict.utf8";
    const char* const IDF_PATH = "./dict/idf.utf8";
    const char* const STOP_WORD_PATH = "./dict/stop_words.utf8";

    class JiebaUtil
    {
        private:
            static cppjieba::Jieba jieba; //static成员变量，类内声明，类外初始化
        public:
            static void CutString(const std::string& src, std::vector<std::string>* out)
            {
                jieba.CutForSearch(src, *out);
            }

    };

    cppjieba::Jieba JiebaUtil::jieba(DICT_PATH,
        HMM_PATH,
        USER_DICT_PATH,
        IDF_PATH,
        STOP_WORD_PATH);
}